Where do I start in the language of Lua?

My question is: How do you start to understand how to script? Now that may be hard to answer but, here's an example: So you're just about to improve or build in your place and you want to script something to function it/to do something. But, you don't know how and that's when LUA comes in. And my point is, "where do I start in Lua?"

There is a very helpful source that actually gives you a good start with learning Lua on the Wiki. http://wiki.roblox.com/index.php?title=Lua_Help

EDIT: These are also good resources: <http://wiki.roblox.com/index.php?title=Abso and_beginner%27s_guide_to_scripting> and http://wiki.roblox.com/index.php?title=Cookbook